Sports shoe, particularly for motorcycling

ABSTRACT

A sports shoe, particularly for motorcycling, comprising an upper with which a sole is associated; at least one receptacle is formed in the sole at least at the outer region of the plantar surface of the foot. One or more outsoles can be accommodated detachably within the at least one receptacle and are thicker than, or as thick as, the at least one receptacle; the sole and the one or more outsoles are detachably associable by way of connecting layers of temporary dry grip material.

BACKGROUND OF THE INVENTION

Among the many motorcycling sports activities, practice of the discipline known as supermotard is increasingly widespread; in this discipline, motorcycles that have a particular structure are used on appropriately provided dirt tracks, generally constituted by two parallel straight sections connected by two sharp U-bends.

The riding technique used in supermotard competitions and in non-competitive practice entails that the rider rides the dirt-track bends by placing one or both of his feet on the ground in order to ensure that the motorcycle, which moves along the entire bend by countersteering, has the required stability.

The application of this riding technique entails intense wear of the sole of the shoes worn by the rider; however, this wear is concentrated almost entirely in the outer region of the sole of the foot.

Likewise, steering techniques used for the motorcycling discipline of motocross cause a particularly intense wear of the sole in very specific points, which however in this case affect the inner region of the sole and are caused mainly by the action of the gear lever and of the rear break.

Known sports shoes, intended for the practice of supermotard or motocross, are currently used which have a sole that is made of a rubber that has high-level mechanical properties and wear resistance, and are capable of withstanding the stresses imparted by their use on the track for a certain period of use.

The main drawback of this known type of sports shoe is that the rubber used to provide the sole is very expensive, due to the materials used for its manufacture, to the production process that is followed and to the specific nature of the application.

Another drawback of these shoes of the known type relates to the fact that due to their particular use, which entails wear that is concentrated almost entirely in the outer region of the sole of the foot, they are unusable when said region has worn out, even though the remaining part of the sole and of the upper are still in excellent conditions.

Moreover, low-cost sports shoes for supermotard are known in which the sole is made of a rubber that has low-level mechanical and wear-resistance properties and on which it is possible to arrange, in the region of higher wear, detachable outsoles made of a rubber that has higher mechanical and wear-resistance properties.

Said outsoles are connected to the sole by means of one or more screws, which are arranged vertically with their head directed downward, so as to grip in a lower region the sole of the shoe and allow to replace said outsoles once they are worn.

The main drawback of this known type of shoe is that as a consequence of the wear of the outsoles, the heads of the screws that couple said outsoles to the sole make contact with the ground and are severely damaged by friction against it, to the point that removing and replacing them is extremely difficult if not impossible.

Another drawback of this known type of shoe is that if outsole replacement is possible, it requires the use of new screws for fixing to the sole, and this causes an increase in costs and in the number of components used.

Low-cost shoes for motocross are also known in which the sole is made of a rubber that has low-level mechanical and wear-resistance properties and on which it is possible to arrange, in the regions of higher wear, removable outsoles made of a rubber that has higher mechanical and wear-resistance properties.

Said outsoles are coupled to the sole by interposing a layer of adhesive that is capable of generating a high adhesion force, in order to withstand the intense stresses to which the outsole is subjected during use.

The main drawback of this known type of shoe is that the outsoles can be replaced only by using appropriately provided equipment that is suitable to overcome the adhesion force of the adhesive and is available for example at the facility used to manufacture said shoe, and manual replacement of the outsole by the user is impossible.

SUMMARY OF THE INVENTION

The aim of the present invention is to solve the above-described problems, eliminating the drawbacks of the cited background art, by providing a sports shoe, particularly for motorcycling and particularly for the sports practice of supermotard or motocross, that allows an extended use thereof that entails intense wear of the sole concentrated in certain points thereof.

Within this aim, an object of the invention is to provide a sports shoe whose technical characteristics can be restored rapidly and simply and at low cost and in a short time.

Another object is to provide a sports shoe that is structurally simple and has low manufacturing costs.

This aim and these and other objects that will become better apparent hereinafter are achieved by a sports shoe particularly for motorcycling, comprising an upper with which a sole is associated, characterized in that at least one receptacle is provided on said sole, at least at the outer region of the sole of the foot, for detachably accommodating one or more outsoles that are thicker than said at least one receptacle, said sole and said one or more outsoles being detachably associable by way of connecting means constituted by layers of temporary dry grip material.

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the invention will become better apparent from the following detailed description of some particular but not exclusive embodiments thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein:

FIG. 1 is a perspective view of a sports shoe particularly for motorcycling, according to the invention;

FIG. 2 is a bottom view of the invention;

FIG. 3 is a sectional view, taken along the line III-III of FIG. 2, of a shoe according to the invention;

FIG. 4 is a sectional view, taken along the line IV-IV of FIG. 2, of a shoe according to the invention;

FIG. 5 is an exploded sectional view of a detail of the shoe according to the invention;

FIG. 6 is a perspective view of a second embodiment of the shoe according to the invention;

FIG. 7 is a bottom view of said second embodiment;

FIG. 8 is a sectional view, taken along the line VIII-VIII of FIG. 7, of said second embodiment;

FIG. 9 is a bottom view of a second embodiment of the sports shoe according to the invention;

FIG. 10 is a sectional view, taken along the line X-X of FIG. 9, of said second embodiment;

FIG. 11 is a transverse sectional view of a variation that can be applied to any embodiment of the invention;

FIG. 12 is a bottom view of a fourth embodiment of a sports shoe according to the invention, particularly for motocross;

FIG. 13 is a sectional view, taken along the line XIII-XIII of FIG. 12, of said sports shoe;

FIG. 14 is a bottom view of a fifth embodiment of a sports shoe according to the invention, particularly for motocross;

FIG. 15 is a sectional view, taken along the line XV-XV of FIG. 14, of said sports shoe;

FIG. 16 is a perspective view of a sixth embodiment of a sports shoe according to the invention, particularly for motocross;

FIG. 17 is a sectional view, taken along the line XVII-XVII of FIG. 16, of said sports shoe;

FIG. 18 is a sectional view, taken along the line XVIII-XVIII of FIG. 17, of said sports shoe.

DESCRIPTION OF THE PREFERRED EMBODIMENTS

As the persons skilled in the art would readily understand, in the embodiments that follow, individual characteristics, given in relation to specific examples, may actually be interchanged with other different characteristics that exist in other embodiments.

With reference to the figures, the reference numeral 1 designates a sports shoe, used for motorcycling and particularly for the discipline of supermotard, which is composed of an upper 2 that is associated with a sole 3 in an upper region.

A first receptacle 4 and a second receptacle 5 are formed in the sole 3, to be located at the outer perimetral region of the plantar surface of the foot of a user, at the bottom surface 3a of the sole 3, which is made of a rubber that has low-level mechanical and wear-resistance properties and is therefore very cheap; said receptacles are preferably provided at the metatarsal and heel regions, respectively.

Said first and second receptacles lie transversely along approximately half of the width of the sole 3, approximately starting from the center zone of said sole, until they affect or extend over the perimetric edge 6 of the sole 3; each one of said first and second receptacles affects or extends in part of the height of the sole 3.

The first receptacle 4, arranged toward the front, lies longitudinally between the tip region 7 of the sole 3 and the arch region 8, and is substantially rectangular (i.e. looks to a great extent as a rectangle), so as to occupy approximately the outer half of the sole in the metatarsal region.

The second receptacle 5, arranged toward the rear, is likewise substantially rectangular, occupies approximately the outer half of the heel 9 of the sole 3, and also affects or extends over the rear part of the perimetric edge 6 of said sole.

The first and second receptacles 4 and 5 respectively have a first preferably flat bottom 10 and a second preferably flat bottom 11, on which a first layer 12 of temporary dry grip material and a second layer 13 of temporary dry grip material are respectively coupled.

The first and second layers 12 and 13 may be provided for example by means of a film of the temporary dry grip material with complemental parts that adhere to each other when pressed together and are further separable when pulled apart, known by the trade-name Velcro.

The sports shoe 1 according to the invention further comprises a first outsole 14, which is substantially shaped like a parallelepiped and whose cross-section duplicates the cross-section of the first receptacle 4, so that it can be inserted detachably therein.

The first outsole 14, conveniently made of a rubber that has better mechanical and wear-resistance characteristics than the rubber that constitutes the sole 3, is higher or has a thickness equal to and/or greater than the first receptacle 4 is deep or thick, so that when it is accommodated in said first receptacle a first lower face 15 thereof protrudes from said receptacle by a chosen extent.

A second upper face 16 of said first outsole has a shape that duplicates the shape of the first bottom 10 of the first receptacle 4, so as to be able to mate with it.

Moreover, a third layer 17 of temporary dry grip material with complemental parts that adhere to each other when pressed together and are further separable when pulled apart, such as the hook and loop-type fasteners, known for example by the trade-name (trademark) Velcro, is further applied in an upper region of the second face 16 and is suitable to adhere to the first layer 12, providing a stable but nonetheless detachable coupling between the first outsole 14 and the sole 3.

A second outsole 18, also substantially shaped like a parallelepiped, has a cross-section that duplicates the cross-section of the second receptacle 5 formed in the heel 9 of the sole 3, so that it can be accommodated detachably therein.

The second outsole 18 also is conveniently made of a rubber whose characteristics are similar to those of the first outsole 14 and is higher or thicker than the second receptacle 5 is deep or thick, so that when it is accommodated in said second receptacle a third lower face 19 thereof protrudes from said receptacle by a chosen extent.

A fourth upper face 20 of said second outsole has a shape that duplicates the shape of the second bottom 11 of the second receptacle 5, so as to be able to mate with it.

A fourth layer 21 of temporary dry grip material, known for example by the name Velcro, is further applied in an upper region of the fourth face 20 and is suitable to adhere to the second layer 13, providing a stable but nonetheless detachable coupling between the second outsole 18 and the sole 3.

Said first, second, third and fourth layers of grip material that constitute the means for mutually connecting the first and second outsoles and the main sole 3 allow a stable and safe connection thereof that is at the same time detachable.

The first and third faces 15 and 19 may further have a plurality of variously shaped protrusions and/or ridges 30 suitable to improve the grip of the outsoles on the ground.

The shoe 1 according to the invention thus provided can therefore be used advantageously in the discipline of supermotard, since it provides the rider with safe support in the outer region of the plantar surface of the foot by way of the high-level mechanical properties of the material that constitutes the first and second outsoles.

Said outsoles, during use of the sports shoe, are firmly connected to the sole by way of the connecting means described above and can be detached easily therefrom when their use has ended, allowing quick replacement of the first and second outsoles 14 and 18, if worn, without the aid of specifically provided equipment.

FIGS. 6 to 8 illustrate a second embodiment 101 of the sports shoe according to the invention, which differs from the first embodiment described above in that below its sole 103 there is a single third receptacle 122, which is generally as wide as half the sole 103 and lies, in the outer region thereof, at the metatarsus, at the arch region of the foot, and at the heel.

The third receptacle 122, which affects or extends over the outer part and the rear part of the perimetric edge 106 of the sole 103, is provided with a third bottom 123, on which a fifth layer 124 of grip material, for example of the type known as Velcro, is applied.

The sports shoe 101 comprises a third outsole 125, which is made of a material that is similar to the material that constitutes the first and second outsoles 14 and 18, is shaped substantially like a parallelepiped, and has a cross-section that duplicates the cross-section of the third receptacle 122, so that it can be inserted therein.

The third outsole 125 is provided with a fifth upper face 126, on which a sixth layer 127 of grip material, for example of the type known by the name Velcro, is applied, said material being suitable to adhere to the fifth layer 124, providing a stable and in any case detachable coupling between the third outsole 125 and the sole 103.

The third outsole 125 is higher than the third receptacle 122 is deep, so that it protrudes partly downward from it.

A third embodiment 201 of the sports shoe according to the invention, suitable for practicing the discipline of supermotard, differs from the ones described previously in that a fourth receptacle 228, a fifth receptacle 229 and a sixth receptacle 230 are formed below the sole 203 at its outer region, respectively in the metatarsal region, in the arch region, and in the heel region.

Said fourth and fifth receptacles, which have an approximately rectangular cross-section, affect the perimetric edge of the sole 203, while the sixth receptacle 230, which also has a substantially rectangular cross-section, occupies approximately the outer half of the heel 209, affecting or extending over the perimetric edge of the sole 203 in its rear region as well.

Said fourth, fifth and sixth receptacles respectively have a fourth bottom 231, a fifth bottom 232 and a sixth bottom 233, which are for example flat and on each of which respective seventh layers 234 of grip material, each constituted for example by a layer of material known by the trade-name Velcro, is applied.

The sports shoe 201 further comprises a fourth outsole 235, a fifth outsole 236 and a sixth outsole 237, whose cross-section duplicates respectively the fourth, fifth and sixth receptacles; said outsoles can be inserted in said receptacles, and an eighth layer 241 of grip material, constituted for example by a layer of material known by the trade-name Velcro, is applied to the respective upper sixth face 238, seventh face 239 and eighth face 240 of said outsoles.

In a manner similar to the first and second embodiments described above, and also to the following ones, said fourth, fifth and sixth outsoles are made of a rubber that has high-level mechanical and wear-resistance characteristics, have a plurality of variously shaped protrusions and/or ridges 30 for grip enhancing, and can be accommodated respectively within the fourth, fifth and sixth receptacles, so that they can be coupled detachably to the sole 203.

FIGS. 12 and 13 illustrate a fourth embodiment of the sports shoe 301 according to the invention, suitable in particular for the practice of motocross.

Said fourth embodiment differs from the preceding ones in that below the sole 303 there is a single seventh receptacle 342, which extends approximately from the inner metatarsal region 343 towards the outer perimetral region of the plantar surface of the foot and comprises the entire cross-section of said sole in the arch region 344 and a step 345 that connects said arch region to the heel 309 of the sole 303.

A ninth layer 346 of temporary dry grip material, constituted for example by a layer of material known as Velcro, is applied to the bottom of the seventh receptacle 342.

A seventh outsole 347, made of a material similar to the one used for the outsoles described earlier and having a shape that duplicates the shape of the seventh receptacle 342 and a height that is substantially equal or corresponds to the depth of said seventh receptacle so that it can be accommodated therein, has, on a ninth upper face 348, a tenth layer 349 of temporary grip material, constituted for example by a layer of material known as Velcro, so that it can be associated detachably with the sole 303.

A fifth embodiment of the sports shoe 401 according to the invention, also suitable for motocross, is shown in FIGS. 14 and 15 and differs from the fourth embodiment described above in that the eighth receptacle 450 formed in a lower region in the sole 403, runs from the inner metatarsal region 443 up to the arch region 444, without therefore affecting the heel 409.

An eighth outsole 451, whose shape duplicates the shape of the eighth receptacle 450, can be inserted therein and can be coupled detachably by way of the same connection means described above for the previous embodiments.

FIG. 11 is a view of a variation 501 that can be applied to each one of the embodiments described so far and comprises a ninth outsole 552, which can be accommodated in a ninth receptacle 553 formed below the sole 503 and can be coupled detachably thereto by means of an eleventh layer of grip material 554 that is applied to the tenth upper face 555 of the ninth outsole and a twelfth layer of grip material 556 that is applied to the bottom 557 of the ninth receptacle 553.

The ninth outsole 552 is wider than the ninth receptacle that accommodates it and is provided with a lug 558 that protrudes upward with respect to it and externally with respect to the ninth receptacle so as to constitute a lateral protection for said eleventh and twelfth layers of grip material, also for aesthetic purposes. It is optionally possible to provide a layer of dry grip material also at the inner lateral surface of the lug 558, said layer being capable of adhering to a corresponding layer of dry grip material provided on at least one portion of the perimetric edge 6 of the sole, so as to ensure better adhesion of the outsole to said sole and better adapt to any curves of said sole.

FIGS. 16 to 18 illustrate a sixth embodiment of the sports shoe 601 according to the invention, particularly suitable for motocross, which comprises a box-like main sole 603, which is preferably obtained by injecting plastic material that has low-level mechanical and wear-resistance properties and is therefore very cheap.

A tenth receptacle 659 is formed below the sole 603 and runs from the heel region to the metatarsal region and affects or extends over the arch region, particularly the inner lateral region of the foot.

A thirteenth layer of temporary dry grip material 660, constituted for example by a layer of material known by the trade-name Velcro, is applied to the bottom of the tenth receptacle 659.

A tenth outsole 661, which is made of a material similar to the one used for the outsoles described earlier, is shaped complementarily with respect to the tenth receptacle 659, and is higher, along most of its extension, than said receptacle is deep, so that it can be accommodated therein, has, on an eleventh upper face 662 thereof, a fourteenth layer 663 of temporary grip material, constituted for example by a layer of material known by the trade-name Velcro, so that it can be detachably associated with the corresponding layer on the sole 603.

In order to further ensure detachable locking of the tenth outsole within the tenth receptacle during use, said tenth outsole may conveniently have, along a portion located proximate to its front edge 664, a height that is approximately equal to the height of the tenth receptacle, so as to reduce the possibility of being accidentally dislodged during use for example due to the air stream that affects it.

The variation 501 described above and shown in FIG. 11 may obviously be applied also to the sixth embodiment 601 of the sports shoe.

In order to contain manufacturing costs, it is advantageously possible to provide identical receptacles on soles of different sizes, so as to require a reduced number of outsoles, each of which can be applied to a preset range of shoe sizes.

It has thus been found that the invention has achieved the intended aim and objects, a sports shoe particularly for motorcycling having been provided which allows extended use thereof even if riding techniques such as the one commonly used in the discipline of supermotard, which entail intense wear of the sole concentrated in certain points thereof, are used.

Another important object that has been achieved is to provide a sports shoe that by comprising parts that are subjected to wear allows easy and quick replacement thereof.

The materials used, as well as the dimensions that constitute the individual components of the invention, may of course be more pertinent according to specific requirements.

The various means for performing certain different functions need not certainly coexist only in the illustrated embodiment that are not intended to be limitative for the claimed invention but can be present per se in different embodiments, including ones that are not illustrated and which are covered by the terms of the appended claims.

The characteristics described as advantageous, convenient or the like may also be omitted or be replaced with equivalents.

In a variation, it is possible to associate below the sole, along part or all of its surface, one or more outsoles by way of connecting means constituted by a layer of temporary dry grip material.

Said layers of temporary dry grip material may be each constituted by a layer of the material known as Velcro, applied respectively to the upper face of said one or more outsoles and to the opposite lower face of the sole. 

1. A sports shoe for motorcycling, comprising: an upper; a sole associated with the upper; at least one receptacle provided on said sole, at least at an outer region of a plantar surface of a foot of a user; at least one outsole that is thicker than said at least one receptacle, and is shaped so as to be accommodatable therein; and connecting means constituted by layers of temporary dry grip material that are provided between said sole and at least one outsole for detachable connection thereof to each other.
 2. A sports shoe for motocross, comprising: an upper; a sole associated with said upper; at least one receptacle provided on said sole that runs from an inner metatarsal region toward an outside region of a plantar surface of a foot of a user to comprise an entire cross-section of said sole in an arch region of the sole; and a step that connects the arch region to a heel of said sole; at least one outsole accommodatable in said at least one receptacle that is thick as, and preferably thicker than, said at least one receptacle, and connecting means constituted by layers of temporary dry grip material provided at said at least one receptacle for detachably connecting to each other said sole and said at least one outsole.
 3. The sports shoe of claim 1, comprising a first receptacle and a second receptacle that are formed on a lower surface of said sole, in the outer region of the plantar surface of the foot of the user, preferably at metatarsal and heel regions of the sole.
 4. The sports shoe of claim 3, wherein said first and second receptacles run transversely along at least half the width of said sole, starting from a center region thereof and extending up to a perimetric edge of said sole and anyway to a region adjacent thereto, each one of said first and second receptacles extending over part of a height of said sole.
 5. The sports shoe of claim 4, wherein said first front receptacle lies longitudinally between a tip region of said sole and the arch region thereof and is substantially rectangular, so as to occupy an outer half of said sole in the metatarsal region of the sole.
 6. The sports shoe of claim 5, wherein said second rear receptacle is substantially rectangular and occupies an outer half of the heel of said sole and also extends along a rear part of said perimetric edge of said sole.
 7. The sports shoe of claim 6, wherein said first and second receptacles, respectively, have a first, preferably flat bottom and a second, preferably flat bottom, and a first layer of temporary dry grip material and a second layer of temporary dry grip material respectively coupled at said first and second bottoms, each one of said first and second layers being preferably provided by way of a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart.
 8. The sports shoe of claim 7, comprising a first outsole, which is substantially shaped like a parallelepiped, has a cross-section that duplicates a cross-section of said first receptacle so as to be detachably insertable therein, and has a height that is greater than a depth of said first receptacle, a first lower face of said first outsole protruding from the first receptacle by a selected extent upon accommodation of said first outsole in said first receptacle.
 9. The sports shoe of claim 8, wherein a second upper face of said first outsole has a shape that duplicates a shape of said first bottom of said first receptacle so as to mate with said first bottom.
 10. The sports shoe of claim 9, comprising a third layer of temporary dry grip material, preferably provided of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, said third layer being applied to said second face in an upper region thereof so as to adhere to said first layer, to provide a stable but nonetheless detachable coupling between said first outsole and said sole.
 11. The sports shoe of claim 10, comprising a second outsole, which is substantially shaped like a parallelepiped, has a cross-section that duplicates a cross-section of said second receptacle, is formed in the heel of said sole, is insertable detachably in said second receptacle, and has a height that is greater than a depth of said second receptacle, with a third lower face of said second outsole protruding from said second receptacle by a selected extent when said second outsole is accommodated in said second receptacle.
 12. The sports shoe of claim 11, wherein a fourth upper face of said first outsole has a shape that duplicates a shape of said second bottom of said second receptacle so as to mate therewith.
 13. The sports shoe of claim 12, comprising a fourth layer of temporary dry grip material, preferably provided by way of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, said fourth layer being applied to said fourth face in an upper region thereof so as to adhere to said second layer, providing a stable but nonetheless detachable coupling between said second outsole and said sole.
 14. The sports shoe of claim 1, comprising a single third receptacle provided below said sole, that is at least as wide as half of said sole, and lies, in an outer region of said sole, at the metatarsus, at the arch and at the heel of the sole, extending at an outer and rear parts of said perimetric edge of said sole.
 15. The sports shoe of claim 14, wherein said third receptacle is provided with a third bottom, with applied thereon a fifth layer of grip material, preferably constituted by a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart.
 16. The sports shoe of claim 15, comprising a third outsole, which is substantially shaped like a parallelepiped and has a cross-section that duplicates a cross-section of said third receptacle, so as to be insertable therein, said third outsole having a height that is greater than a depth of said third receptacle, so as to protrude downward therefrom by a selected extent.
 17. The sports shoe of claim 16, wherein said third outsole has a fifth upper face, with applied thereon a sixth layer of grip material, preferably constituted by a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, said sixth layer being suitable to adhere to said fifth layer, to provide a stable and nonetheless detachable coupling between said third outsole and said main sole.
 18. The sports shoe of claim 1, comprising a fourth receptacle, a fifth receptacle and a sixth receptacle provided below said sole, respectively, at outer, metatarsal, arch and heel regions thereof.
 19. The sports shoe of claim 18, wherein said fourth and fifth receptacles, which have a substantially rectangular cross-section, extend at a perimetric edge of said sole, and said sixth receptacle having a substantially rectangular cross-section occupying an outer half of said heel, and extending at the perimetric edge of said sole at a rear region thereof as well.
 20. The sports shoe of claim 19, wherein said fourth, fifth and sixth receptacles, respectively, have a fourth, a fifth and a sixth bottoms, which are preferably flat and with applied thereon a seventh layer of grip material, said grip material being preferably constituted by a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart.
 21. The sports shoe of claim 20, comprising a fourth, a fifth and a sixth outsoles, which have cross-sections that respectively duplicate a cross-section of said fourth, fifth and sixth receptacles so as to be insertable therein, said fourth, fifth and sixth outsoles having further a height that is greater than a depth of said fourth, fifth and sixth receptacles respectively, so as to protrude downward therefrom by a selected extent.
 22. The sports shoe of claim 21, wherein said fourth, fifth and sixth outsoles respectively have a sixth upper face, a seventh upper face and an eighth upper face, with an eighth layer of grip material, preferably constituted by a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, applied thereon, said eighth layer being suitable to adhere to said seventh layer, providing a stable and nonetheless detachable coupling between said fourth, fifth and sixth outsoles and said main sole.
 23. The sports shoe of claim 2, comprising a single seventh receptacle provided below said sole, and a ninth layer of temporary dry grip material, preferably constituted by a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, that is applied at a bottom of said seventh receptacle.
 24. The sports shoe of claim 23, comprising a seventh outsole with a shape that duplicates a shape of said seventh receptacle and having a height at least equal to a depth of said seventh receptacle, so as to be accommodatable therein, and having, on a ninth upper face thereof, a tenth layer of a temporary grip material, preferably constituted of a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart, said seventh outsole being detachably associable with said sole by way of said tenth layer.
 25. The sports shoe of claim 16, wherein at least one of said outsoles, which is accommodatable detachably in one of said receptacles, is provided with a lug that protrudes upward with respect to said at least one outsole and externally with respect to the receptacle in which it is accommodated, so as to constitute a lateral protection with aesthetic appearance.
 26. The sports shoe of claim 25, comprising a layer of dry grip material at an inner lateral surface of said lug, and a corresponding layer of dry grip material provided on at least one portion of the perimetric edge of said sole that are adapted to adhere to each other.
 27. The sports shoe of claim 14, wherein said outsoles have, at said lower faces thereof, a plurality of variously shaped protrusions and/or ridges in order to improve grip of the outsoles on the ground.
 28. The sports shoe of claim 14, wherein said outsoles are made of a rubber with high-level mechanical and wear-resistance characteristics.
 29. A sports shoe for motorcycling, comprising an upper; a sole associated with said upper; at least one receptacle provided in said sole, to be located at least at an outer region of a plantar surface of a foot of a user; at least one outsole that has a thickness at least equal to, and preferably greater than, a thickness of said at least one receptacle, so as to be accommodatable therein; and connecting means constituted by layers of temporary dry grip material provided at said at least one receptacle for detachably connecting said at least one outsole to said sole.
 30. A sports shoe for motorcycling, comprising an upper; a sole associated with said upper; at least one outsole; and connecting means constituted by layers of temporary dry grip material that are provided at said sole for detachably connecting said at least one outsole of said sole.
 31. A sports shoe for motorcycling, comprising an upper; a sole having a box-like structure made of a plastic injection material associated with said upper; at least one receptacle formed in said sole so as to be located at an inner region of a plantar surface of a foot of a user, said at least one receptacle extending from a heel region to a metatarsal region of the sole, over an arch region of the plantar surface of the foot; at least one outsole having, along most of an extension thereof, a thickness greater than a depth of said at least one receptacle, said sole and said at least one outsole accommodatable in said at least one receptacle; and connecting means constituted by layers of temporary dry grip material that are provided at said at least one receptacle for detachably connecting said at least one outsole to said sole.
 32. The sports shoe of claim 31, wherein said sole and said at least one outsole, respectively have a first, preferably, flat bottom and a second, preferably, flat bottom with a first layer of temporary dry grip material and a second layer of temporary dry grip material provided thereon so as to couple to each other, each one of said first and second layers being preferably provided by means of a film of a material comprising complemental parts that are adherable by pressure and are further separable when pulled apart. 